APA

Li X., Chen Y. & Yang K. (20190319). Sham surgical procedures for pain intervention result in significant improvements in pain: systematic-review and meta-analysis: Clinical heterogeneity and risk of bias on the placebo effect associated with sham surgeries. : Journal of clinical epidemiology.

Chicago

Li Xiuxia, Chen Yaolong and Yang Kehu. 20190319. Sham surgical procedures for pain intervention result in significant improvements in pain: systematic-review and meta-analysis: Clinical heterogeneity and risk of bias on the placebo effect associated with sham surgeries. : Journal of clinical epidemiology.

Harvard

Li X., Chen Y. and Yang K. (20190319). Sham surgical procedures for pain intervention result in significant improvements in pain: systematic-review and meta-analysis: Clinical heterogeneity and risk of bias on the placebo effect associated with sham surgeries. : Journal of clinical epidemiology.

MLA

Li Xiuxia, Chen Yaolong and Yang Kehu. Sham surgical procedures for pain intervention result in significant improvements in pain: systematic-review and meta-analysis: Clinical heterogeneity and risk of bias on the placebo effect associated with sham surgeries. : Journal of clinical epidemiology. 20190319.